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Monthly climate in Stornoway, Scotland, United Kingdom

Last updated: May 6, 2024

Under the Köppen–Geiger climate classification Stornoway features a oceanic climate (Cfb).Temperatures typically range between 6 °C (43 °F) and 14 °C (58 °F) through the year, but rarely can drop to -3 °C (26 °F) or can rise to as high as 25 °C (77 °F).The average annual precipitation amounts to about 1115 mm (43.9 inches) and receives 208 rainy days on the 1 mm (0.04 inches) threshold annually.Stornoway enjoys an average of 2910 hours of sunshine throughout the year, and daylight varies from 6 hours 30 minutes to 18 hours 5 minutes per day.

Monthly average temperatures in Stornoway, Scotland, United Kingdom §

The warmest months in Stornoway are June, July and August, with daily mean temperatures ranging from 13 to 14 °C (56 - 58 °F) throughout the day. The coldest temperatures usually occur in January, February and December, when daily mean temperatures range from 6 to 6 °C (43 - 43 °F) throughout the day. On average each year, Stornoway experiences 0 days above 25 °C (77.0 °F) and 11 days below 0 °C (32.0 °F).

Monthly average temperatures with daily means, minimums and maximums for period, average high and low temperatures in Stornoway, Scotland, United Kingdom.Generated using Copernicus Climate Change Service information.Data for period from January 2017 to June 2022.
  Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec
Maximum 13°C
(56°F)		 14°C
(57°F)		 16°C
(60°F)		 21°C
(70°F)		 24°C
(75°F)		 23°C
(75°F)		 25°C
(77°F)		 22°C
(71°F)		 22°C
(71°F)		 17°C
(63°F)		 15°C
(60°F)		 14°C
(57°F)
Mean maximum 12°C
(53°F)		 12°C
(53°F)		 13°C
(56°F)		 16°C
(62°F)		 21°C
(70°F)		 21°C
(70°F)		 23°C
(73°F)		 20°C
(69°F)		 19°C
(67°F)		 16°C
(61°F)		 14°C
(57°F)		 13°C
(55°F)
Average high 8°C
(46°F)		 8°C
(46°F)		 9°C
(49°F)		 11°C
(52°F)		 13°C
(56°F)		 16°C
(60°F)		 17°C
(63°F)		 17°C
(62°F)		 15°C
(60°F)		 12°C
(54°F)		 10°C
(50°F)		 8°C
(47°F)
Daily mean 6°C
(43°F)		 6°C
(43°F)		 7°C
(44°F)		 8°C
(47°F)		 10°C
(51°F)		 13°C
(56°F)		 14°C
(58°F)		 14°C
(58°F)		 13°C
(55°F)		 10°C
(51°F)		 8°C
(46°F)		 6°C
(43°F)
Average low 4°C
(40°F)		 4°C
(39°F)		 4°C
(39°F)		 5°C
(42°F)		 7°C
(45°F)		 10°C
(50°F)		 12°C
(53°F)		 12°C
(53°F)		 10°C
(50°F)		 8°C
(47°F)		 6°C
(42°F)		 4°C
(40°F)
Mean minimum -0°C
(32°F)		 -1°C
(30°F)		 -0°C
(32°F)		 -1°C
(31°F)		 2°C
(36°F)		 6°C
(43°F)		 7°C
(45°F)		 8°C
(47°F)		 5°C
(42°F)		 3°C
(37°F)		 1°C
(33°F)		 -2°C
(29°F)
Minimum -3°C
(27°F)		 -3°C
(26°F)		 -3°C
(27°F)		 -2°C
(29°F)		 -1°C
(31°F)		 4°C
(39°F)		 6°C
(43°F)		 6°C
(44°F)		 1°C
(35°F)		 0°C
(33°F)		 -3°C
(28°F)		 -3°C
(27°F)

Compare climate in Stornoway with other places

Compare temperature, precipitation, sunshine, UV index in Stornoway, Scotland, United Kingdom with other places around the world.

Monthly average precipitation in Stornoway, Scotland, United Kingdom §

Stornoway usually has the most precipitation in September, October and November, with an average of 18 rainy days and 114 mm (4.5 inches) of precipitation per month.The driest months in Stornoway are April, May and June. On average, 68 mm (2.7 inches) of precipitation falls during these months.

Monthly average precipitation and precipitation days in Stornoway, Scotland, United Kingdom.Generated using Copernicus Climate Change Service information.Data for period from January 2017 to January 2022.
  Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec
Average precipitation mm (inches) 77 (3.0) 99 (3.9) 102 (4.0) 63 (2.5) 73 (2.9) 70 (2.7) 89 (3.5) 102 (4.0) 110 (4.3) 128 (5.0) 106 (4.2) 98 (3.8)
Average precipitation days (≥ 1 mm) 13 16 19 15 17 15 19 20 19 20 17 18

Monthly sunshine hours in Stornoway, Scotland, United Kingdom §

The sunniest months in Stornoway are May, June and July, when the sun shines an average of 12 hours 49 minutes a day.Least sunny months in Stornoway: January, November and December receive an average of 2 hours 26 minutes of sunshine daily.

Mean monthly sunshine duration, average sunshine hours per day and mean daily daylight hours in Stornoway, Scotland, United Kingdom.Generated using Copernicus Atmosphere Monitoring Service information.Data for period from January 2017 to January 2022.
  Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec
Mean monthly sunshine hours 52 134 202 321 388 398 392 365 276 205 103 68
Mean daily daylight hours 7h 13m 9h 21m 11h 52m 14h 27m 16h 47m 18h 5m 17h 23m 15h 14m 12h 44m 10h 11m 7h 50m 6h 30m

Solar UV radiation in Stornoway, Scotland, United Kingdom §

Stornoway experiences the highest level of ultraviolet (UV) radiation in June, July and August, when the maximum UV index can reach values of 6 - 7, which corresponds to the High category of sun exposure.January, February and November are in the Low exposure category. In these months, the maximum values of the UV index do not exceed 1. For more detailed information, check out our hourly Stornoway UV Index data.

Average daily maximum UV levels by month for Stornoway, Scotland, United Kingdom.Generated using Copernicus Atmosphere Monitoring Service information.Data for period from January 2022 to January 2023.
  Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec
UV Index (month maximum) 1 1 3 4 5 7 7 6 4 2 1 1